Suction cleaner



Nov. 19, 1940. R. KAHN 2,222,077

SUC'I'iON CLEANER Filed May 28, 1938 2 Sheets-Sheet l INVENTQR Panam Mam BY am ATTORNEY .19, 1940.. I R. KAHN 2,222,071

I SUCTION CLEANER Filed May 28, 1938 2 Sheets-Sheet 2 INVENTOR fil /004 P/l Kwm BY I ATTORNEY tective receptacle for the paper sack with a top end which mates with the ring of the dust bag. In this way, I have applied my invention not only to large size suction cleaners for carpets, but also to miniature hand-carried cleaners having a single ring for both intake and discharge of dirt.

To the accomplishment of the foregoing and such other objects as will hereinafter appear, my invention consists in the suction cleaner dust bag and associated elements and their relation one to the other, as hereinafter are more particularly described in the specification and sought to be defined in the claims. The specification is accompanied by drawings, in which:

Fig. 1 is a perspective view showing the inven tion applied to an otherwise conventional suction cleaner;

Fig. 2 is a partially sectioned view of the upper end of the dust bag at the discharge ring;

Fig. 3 is a side elevation of the same;

Fig. 4 is a partially sectioned elevation illustrating the method of applying the dust bag to a paper sack and protective receptacle;

Fig. 5 is explanatory of the transfer of large clots of nap from the dust bag into the receptacle;

Fig. 6 is a bottom view of the receptacle;

Fig. 7 illustrates a modified form of suction Referring to the drawings, and more particularly to Fig. 1, the suction cleaner is conventional in comprising a suction nozzle 42 leading to a,

motor driven fan 54 the outlet of which is shown at It and is connected to a porous fabric dust bag I8 by meansof a coupling ring which may be of conventional character. The cleaner is moved on wheels 22 by means of a stick or handle 24, and the upper end of the dust bag is connected to the handle 24 by means of a spring 26. The outstanding difference between the cleaner of Fig. 1 and conventional cleaners centers about the discharge opening which consists of a relatively large or at least moderately large diameter ring disposed on one side of the dust bag near the upper end thereof and closed in dust-proof manner by means of a cap 30.

Referring now to Figs. 2 and 3,-the discharge ring 32 is flanged at 34 and thereby forms a seat for a rubber or other suitable gasket ll. The cap has a flange or side wall 3! (Fig. 3) provided with inwardly projecting pins 40. Ring 32 has bayonet slots 42 (see Fig. 4), and these slots reoeive the pins when the cap is tightened onto ring 32. The disposition of the pins, slots, flange I4 and gasket 38 is such as to provide a dusttight closure. 1

The dust bag I8 is permanently secured to ring 32 in any convenient manner. In the present case, the fabric of the dust bag is turned in-' wardly about a metal band 44 the ends of which are turned outwardly and are adapted to be pulled together by means of a screw-and-nut connection 48. The lower end of support spring 28 is secured to the discharge ring at the same time, for the screw connection 46 passes through the lower eye of the spring. A tight clamping pressure may be effected by band 44, thus making a dependable, dust-proof connection between the dust bag and the discharge ring. .The inner edge of the discharge ring 32 may, if desired, be

provided with a bead or ledge 48, thus anchoring from consideration of Figs. 1, 2, and 3. The arrangement is convenient in permitting the discharge ring and the cap 30 to lie in a relatively upright and compact position. It is also of value for a reason explained later and having to do with the discharge of clots of nap from the bag.

Referring now to Fig. 4, I provide a rigid receptacle 69 which is widely open at its upper end. The receptacle as here illustrated is made of sheet metal and may follow ordinary can-making practice. The diameter of the receptacle is such as to accurately flt the ring 82, and the receptacle is provided with inwardly projecting pins 52 which mate with the bayonet slots 42 on ring 32. The parts fit together with a dust-proof fit, and the regular gasket 36 of the discharge ring functions with the receptacle 60 as well as with the cap 80.

A paper sack 54 of suitable dimension is slid into the receptacle and is protected and supported thereby during the dirt transferring operation. .An ordinary paper sack may be used in which case the upper end may be torn at a few points to facilitate folding the edge outwardly around the mouth of the can. If preferred special paper sacks may be made which accurately fit the can and which are provided during their manufacture with a slit mouth facilitating turning of, the sack outwardly as indicated in Fig. 4. In Fig. i, the sack 54 is in the act of being placed in the can and has not yet been pushed all the way down. When all the way in, the downturned edge it assumes the position shown in Fig. 5, and pins 52 are exposed within the sack by simply'pressing the walls of the sack outwardly at the pins. After the sack has been inserted in the can, the discharge ring 32 is secured in place, as previously described, and the contents of the dust bag are then shaken from the dust bag into the paper sack.

During this transfer operation, the paper sack is held against movement and is protected against breakage by the can. This convenient fixed support of the bag may be improved by providing the receptacle 50 with a special foot plate, and referring to Figs. 4 and 6, I provide a foot plate which projects from one side of the receptacle and on which a foot may be placed while transferring the dirt. Foot plate 60 is preferably made movable, and in the present case is pivoted so that it may be turned out of the way when not in use. For this purpose, the plate is pivoted at 62 on the bottom 84 of the can. The dimension of the plate is such that it may be turned from the solid line position 80 to the broken line position 60', at which time it lies beneath the can and within the bottom bead 68. This bottom bead is preferably struck upwardly and outwardly, as is indicated at 62, thereby forming a recess into which plate I! fits, thus retaining the plate in projecting position during use. This arrangement has the further advantage of bringing the bottom of the 1| plate dosh with bead 68 of the can so that the assembly will rest flat on the floor in a secure manner.

h light shaking of the small end 01' the dust bag begins to transfer loose dust into the paper each, but in ordinary practice, this transfer is soon interrupted by large clots of nap which move in the dust bag to the discharge ring but ill which will not or themselves pass through the discharge ring. This difllculty is easily overcome in the present case by simply occasionally pressing the side wall III of the bag inwardly with lid till

ltd

the fingers of. one hand, as is indicated by the change from the solid line position Ill to the brolren line position Ill in Fig. 5. This pushes the blmches oi nap through the discharge ring and into the paper sack. The transfer operation may" thus he proceeded with under convenient, clean and dust-free conditions. litter the contents or the dust bag have'been trans-.- ierred into the paper sack, the dust bag is freed irom the receptacle, the cap 30 ls replaced, and the dust bag is again hung on the handle or the cleaner, the paper each with its contents is removed train the can and deposited in a garbage can, ashcan, or dropped in an incinerator passage, depending upon the most convenient means at disposal which happens to be available.

it may be mentioned that many of the advantages or the invention may be obtained even without using the paper saclr. dpecihcally, the dirt may be transferred irem the dust bag into 7 the can in a clean and dust-tree manner, following which the can may be emptied. While somedust will rly during emptying or the can, it is very slight in amount compared to the clouds oi dust which are raised when violently shaking the dust bag with its and open. Moreover, there. is no need to insert each hand directly into the dust dill bag in order to pull out the clumps or bunches or imp. v 1 v iteierring new to i lg. l, I there illustrate a dli ierent. :lorm oi suction cleaner in which the dust bag ill is permanently closed at its upper end it and is attached to the tan outlet at it with the aid at a moderately large size attaching ring.

line ring is accrued in place by two knurled nuts auction cleaner, the ring is attached by a laceto-laceconnectlon;

iieierring now to Fig. ii, the protective recaptacle it is much like thatjprevlously described and is preferably similarly provided with an outwardly swlngable loot plate 88. Theupper and oil the container lifters in being turned outwardiy and reversely bent to form a still broadsuriaced flange 9|! adapted to receive the at tachlng ring 8c of dust bag l2. For this purpose, the hangs Hills providedwith fixedly mounted upwardly projecting screws 92 each or which carries a suitable knurled nut 94. The paper saclr or is placed in receptacle 86 and its upper edge is turned outwardly as is indicated at 98.

' i'ting are applied on top of theoutwardly turned mouth or the paper bag and is secured tightly in 7 v chafing and partially by push emptying, the

latter beins. in my opinion, a most valuable feature or the invention. The reason for-this is that mere shaking of the bag will transfer dirt onlyvuntil a large clotor bunch of nap reaches the discharge ring, whereupon no further amount 01 shaking will succeed in transferring thenap through the ring. However, a gentle push 0. the fabric of the bag will readily transfer even a large stubborn clump of nap through the discharge ring, and this is indicated by the broken line position 12' in Fig. 10. Some suggestion has been made by the manufacturers of vacuum cleaners concerning the possibility of placing the discharge ring on a newspaper spread-out on the floor and thereupon shaking the dirt out or the dust bag and onto the newspaper. The main dilficulty with this 7 suggested procedure is that bunches of nap will not pass through the discharge ring. With such an arrangement, the

bunches oi" nap cannot be pushed through the ring tor the ring rests on the door. Considered in this aspect-one or the important features at the present invention resides in the fact that the rigid receptacle provides an elevated supportior the discharge ring, thereby making it possible to push the nap through and to a point below the discharge ring. incidentally, this push emptylog compacts the dirt in the paper saclr and receptacle, and thereby increases the edective capacity oi the each and receptacle. For this reason, a larger charge oil dirt may be unloaded from the dust bag than might be anticipated from inspection oi the receptacle relative to the size oi the dust bag.

in Fig. ii, i show the application oi my invention to the dust bag ldli ol a small portable or a hand-carried cleaner. in this particular cleaner, the dust bag is short relative to its diameter, as

will be seen in the drawingsfand it is closed at its upper end ldl. its lower end is secured to a relatively large diameter rlng'lt i. This ring is pro vided with bayonet slots ltd and a soit rubber gasket Mill. The bag is secured to the discharge outlet oi the fan by simply engaging slots ltd with mating pins on the fan outlet.

For use with this cleaner, the receptacle lid may be made much as was described in Figs. 4.- and 5, except that the upper edge oi the receptacle is tiu ned inwardly, as is indicated at iii,

while the attaching pins lid project outwardly llrom the can. The paper saclr i it is oi the character previously described, and its outwardly turned mouth or lip lid is bent downwardly about the mouth oi receptacle llll. To secure the parts together, it is merely necessary to push the paper sack lid into rigid receptacle lldand tethereupon secure the ring llli 'to the receptacle and paper sack with the older slots W6 and plus i M The gasket I08 functions with receptacle lit just as it does with the cleaner. The dust bag is emptied by shaking, and clots or nap are simply pushed thrpugh the discharge ring by pressing the top end 102 of the bag from the solid line position to the broken line position W2.

It is believed that the construction and method of use of my invention, as well as the many advantages thereoi, will be apparent from the loregoing detailed description. It will also be appar. eat that while I have shown and described my lnvention in a preferred form, many changes and modifications may be made in the structures disclosed without departing from the spirit or the invention defined in the following claims. claims, I refer to the discharge ring as .relatively large in diameter, but this means relative to the Bill In the conventional inlet coupling at the lower end, in bags which are open at the upper end,

I claim:

1. The combination with a suction cleaner dust bag having a relatively large-diameter rigid dis charge ring permanently secured thereto, said ring being so shaped and dimensioned as to readily detachably receive a removable closure for closing said ring with a dust-tight fit, of an inexpensive discardable paper sack for receiving the dust and nap from the dust bag, and a rigid receptacle large enough to receive and protectively enclose the paper sack, said receptacle having an open top which is so dimensioned and arranged as to receive the mouth of the paper sack and the discharge ring of the dust bag with the sack clamped between the top and the ring with a dust-proof lit. in order to facilitate emptying oi the dust bag into the paper sack.

2. The combination with a suction cleaner dust bag having a ring opening secured thereto, of an inexpensive discardable paper sack for receiving the dust and nap from the dust bag; and a rigid receptacle large enough to receive and protectively enclose the paper sack, said receptacle having a closed bottom and an open top, the top being so dimensioned and arranged as to receive the mouth of the paper sack and the discharge ring of the dust bag with the sack clamped between the top and the ring with a dust-proof fit in order to facilitate emptying of the dust bag into the paper sack.

3. The combination with a suction cleaner having a dust bag provided with a ring opening, of an inexpensive discardable paper sack for receivingthe dust and nap from the dust bag, and a rigid receptacle large enough to receive and protectively enclose the paper sack, said receptacle being a cylindrical receptacle of uniform diameter and having a closed bottom and a fully open top dimensioned to receive the ring of the dust bag, and said ring and receptacle being provided with appropriate mating means for securing the ring to the mouth of the receptacle with the mouth of the paper sack clamped therebetween, said receptacle facilitating emptying of the dust bag into the paper sack.

4. The combination with a suction cleaner dust bag having a relatively large-diameter rigid discharge ring permanently secured thereto, said ring being so shaped and dimensioned as to readily detachably receive a removable closure for closing said ring with a dust-tight fit, of an inexpensive discardable paper sack for receiving the dust and nap from the dust bag, and a rigid receptacle large enough to receive and protectively enclose the paper sack, said receptacle having an open top which is so dimensioned and arranged as to receive the mouth of the paper sack and the discharge ring of the dust bag with the sack clamped between the top and the ring with a dust-proof flt in order to facilitate emptying of the dust bag into the paper sack, said' receptacle being provided with a foot plate movably mounted on the bottom thereof for movement between a retracted position beneath the bottom and an exposed position outside the bottom, said foot plate when in exposed position helping to hold the receptacle stationary during transfer of dirt from the dust bag.

5. The combination with a suction cleaner dust bag having a' ring opening secured thereto, of an inexpensive discardable paper sack for receiving the dust and nap from the dust bag, and a rigid receptacle large enough to receive and protectively enclose the paper sack, said receptacle having a closed bottom and an open top, the top being so dimensioned and arranged as to receive the mouth of the paper sack and the discharge ring of the dust bag with the sack clamped between the top and the ring with a dust-proof fit in order to facilitate emptying of the dust bag into the paper sack, and a foot plate pivotally mounted on the bottom of the receptacle .in such a manner that it maybe turned beneath the receptacle when not in use and may be turned outwardly to rest on the floor outside the receptacle in order to facilitate holding the receptacle against movement during emptying of the dust bag.

6. The combination with a suction cleaner having a dust bag provided with a ring opening, of an inexpensive discardable paper sack for receiving the dust and nap from the dust bag, and a rigid receptacle large enough to receive and protectively enclose the paper sack, said receptacle being a cylindrical receptacle of uniform diameter and having a closedv bottom and a fully open top dimensioned to receive the ring of the dust bag, and said ring and receptacle being provided with appropriate mating means for securing the ring to the mouth of the receptacle with the mouth ofv the paper sack clamped therebetween, said receptacle facilitating emptying of the dust bag into the paper sack, said receptacle being provided with a foot plate movably mounted on the bottom thereof for movement between a retracted position beneath the bottom and an exposed position outside the bottom, said foot plate when in exposed position helping to hold the receptacle stationary during transfer of dirt from the dust bag into the receptacle.

RUDOLPH KAHN. 

